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zakruti.com » Knowledge, science, education » Crash Course
Brown Dwarfs: Crash Course Astronomy #28

Brown Dwarfs: Crash Course Astronomy #28

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Rating: 4.0; Vote: 1
While Jupiter is nowhere near massive enough to initiate fusion in its core, there are even more massive objects out there that fall just short of that achievement as well called brown dwarfs. Brown dwarfs, have a mass that places them between giant planets and small stars. They were only recently discovered in the 1990-s, but thousands are now known. More massive ones can fuse deuterium, and even lithium, but not hydrogen, distinguishing them from -normal- stars. Sort of. Correction: In the illustration at 9: 30, the numbers listed after the star names are the year of discovery, not distance
Date: 2022-04-04

Comments and reviews: 10


The big difference is until they die which means they get room temperature or even lower until then they don't produce much light but they do produce some as they contract and cool over a couple of billion years so they're not like planets to me most astronomers believe Brown dwarfs can even have a planetary system although the planets would have to be extremely close and will only have about a billion years to 2 billion to form life because all seven of the planets discovered around the ridge War are closer than Mercury much closer the inner ones were too hot the outer ones were icing even though they're closer than Mercury and the ones in the middle would have been just right course that's a true stor although a teeny one so any planets around a brown dwarf would almost have to be in the atmosphere to get much warmth literally any further than a million miles give or take and it would be far too cold
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Hmmmmm. So Stars form at the Center of a spinning Dust ball called an Accretion Disc. So. Which comes First? . If the Accretion Disc comes first. How does the Star form and how does it get to the center of the Disc? .? How does the Disc start spinning? . What's the progression for a Star Forming? . Dust > Asteroid > Planetesmal > Planet > Huge Planet (Jupiter) > Brown Dwarf > Fusion Star. > Giant Star > Black Hole! . Doesn't that mean the Sun is Solid? . And if it's solid and has an Atmosphere. wouldn't all that Dust be Pummeling the Atmosphere with a gazillion Micro Meteorites every second. Creating a hot Zone (as Bright as a Meteor streaking across the sky). That would Melt and Boil the Surface? . Hmmmmmm
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I have an acronym for the classifications. Oh Be A Famous Gymnast Knowing My Loving Thank You. Solved that crisis! What-s that Stan? The Ultraviolet catastrophe has killed everyone? Oh well. It-s official now! Now every person in world agrees!
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1st tyvm I'm honored to be included Jupiter almost hits nemesis this go around were on the other side of the sun so we land on Jupiter pack it with enough boom to slow Nemisis down so were not sling shotted out to the Non habital zone.
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What would happen if we were told the truth. How is it that we are told what's in other planets core but yet we have no clue as to what's in ours. So many inflated things that absolutely no one can even come close to the real numbers.
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It's my understanding that a brown dwarf on the cusp of being a star is not significantly larger than Jupiter, though it far outmasses the planet. Some things in physics are quite strange indeed.
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OK so if brown dwarves accumulate mass but not size, increasing their density and (I assume) their gravitational pull. could they theoretically 'flare up' and become actual stars?
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6: 22 alternative - Oh Boy A Frickin' Giant Killing Machine Lumbers Towards You? Or perhaps you'd prefer: Our Best Approach For Gaining Knowledge Makes Little Toddlers Yawn?
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I don't buy that Solar System creation model. do we see that happening elsewhere in the cosmos? Star nurseries are not like that, with little discs everywhere, are they?
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The late Carlos Munoz Ferrada around 1940 discovered a brown/red dwarf. His original research is hard to find. How may star systems have we observed which are binary?
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